Concrete wall



barren STATES ANTON MARIUS CRAMER, F AREN DAL, NORWAY.

CONCRETE WALL.

- specification.

My invention relates to concrete walls which are molded between an outer and an inner form or sheeting so as to have inner and outer layers spaced to form continuous vertical air channels alternatin with cross or joining walls or pillars, connecting the inner and outer body or layer of the wall. Anv object of my invention is to provide a connection between said outer and inner layer or body that provides atthe same time an eiiicient insulation against the passage of moisture-from one wall to the other and a reliable and efficient binding or tying of the outer and inner bodies or parts of the wall.

This I effect by building up the said joiningwalls of superposed previously cast con-' crete posts covered by an outer coating of insulating material and formed with mortised or other suitable grooves or tongues so as to provide a reliable and ellicient mechanical binding between the outer and inner body of the wall.

Some forms of the invention are illustrated in the accompanying drawings, in which:

Fig. 1 is a horizontal section of a concrete wall, and Fig. 2 a side and end View of the corresponding connecting post.

Fig. 3 is a horizontal section of a wall with two longitudinal rows of vertical air channels, and Fig. 4 a side and end view of the corresponding interconnecting or binding post.

Fig. 5 isa horizontal section of a wall wherein the vertical air sections are formed by aid of inserted hollow tubular bodies, and Fig. 6 is a side and end view of the corresponding interconnecting post.

Fig. 7 is a vertical sectional View of the wall construction shown in Fig. 3, the section being taken centrally of a tie pillar.

Specification of Letters Patent.

Patented nine 27, 1922.

Application filed April 29, 1919. Serial No. 293,432.

The outer and inner sections 1, of the wall maybe cast in the usual or any suitable manner, so as to be spaced from each other to provide an air channel or space between them. Before casting the sections of the wall, however, solid tie pillars 3 of concrete are properly positioned, where they will be interposed between the sections of the walls. These pillars are previously prepared and set, and have grooves 4, therein. hen the sections of the wall are cast from concrete in a plastic condition, the concrete flows into the grooves 4c and completely fills the same. When this plastic concrete sets the parts pro jecting from the surface of the sections into the grooves will form rigid tongues for locking the sections of the wall together, through the medium of the pillars 3. The tongues, which are integral with the sections of the wall, form an eflicient mechanical connection between the walls. The pillars 3, being set in advance, aid in supporting the concrete when it is in a semi-plastic condition. Pref:

erably, the pillars 3 are made in relatively short sectionswhich are superposed or built up in the course of construction. The grooves at, in the pillars are, preferably, dove-tail in shape so as to insure a positive looking action between the wallsections and the pillars. The concrete tongues on the pillars will consequently alsobe dove-tail in shape, as shown in Fig. 2.

After the pillars 3 have been cast and have set, the grooved face and the surfaces of the grooves are coated with hot asphalt or other suitable material which is impervious to moisture. This insulating coating prevents the moisture of the plastic concrete from being absorbed by the pillars and forms a means to prevent adhesion of the inner and outer sections to the pillars. The insulating coating, in connection with the air columns 2, prevents moisture from being transferred from the outer wall section to the inner wall section.

In the form illustrated in Figs. 3 and 4 the pillars 3 are broader than those shown in Figs. 1 and 2, and have vertical grooves or indentations 5 in their side faces, said grooves being adapted to effect connection between the binding posts and an intermediate partition or wall 1 so as to form two parallel rows of vertical air channels 2.

The vertical air channels in the walls may, as shown in Fig. 5, be formed as is well known by inserting superposed tubes or tubular bodies 6, alternating with superposed pillars. These tubes 6 are, preferably, cast of a strong cement composition and pro vided with an insulating coating of asphalt. As shown in Figs. 5 and 6 the corresponding binding posts are provided with concave sides fitting snugly to the sides of the tubes (3.

If necessary there may be inserted iron ties 7 bet-ween the superposed binding posts in order to provide an additional anchorage between the inner and outer part of the wall, but as a rule this may be dispensed with.

It may be mentioned that the use of dovetailing in connection with an interposed layer of insulating material is in itself before known as means for providing connection between the inner and outer portions of a wall, and that my invention is limited to the use of previously prepared and coated binding posts alternating with vertical air channels and provided on their opposite faces with dovetail, indentations or other means for making a good mechanical connection with the outer and inner layer of the wall, respectively.

Claims:

1. A concrete wall construction comprising spaced, inner and outer wall sections of concrete, and solid concrete tie pillars joining the same and located intermediate the side edges of the inner and outer wall sections said pillars having grooves provided in their sides which face the wall sections to receive the concrete from which the wall sections are formed which forms rigid locking tongues projecting into the grooves of the pillars,

outward from said inner wall section and inwardly from said outer wall section and integral with their respective wall sections.

2. A concrete wall construction co1nprising spaced, inner and outer wall sections of concrete, solid concrete tie pillars joining the same, and located intermediate the side edges of the inner and outer wall sections, said pillars having grooves in their sides which face the wall sections to receive the concrete from which the wall sections are formed which forms rigid locking tongues projecting into the grooves of the pillars outwardly from said inner wall sections and inwardly from said outer wall sections and integral with their respective wall sections; and a coating of material impervious to moisture on the surfaces of said pillars in contact with the outer and inner wall sections to insulate said wall sections from each other.

3. A concrete wall construction comprising spaced, inner and outer wall sections of concrete, solid concrete tie pillars joining the same and located intermediate the side edges of the inner and outer wall sections, said pillars having grooves in their sides which face the wall sections to receive the concrete from which the wall sections are formed which forms rigid locking tongues projecting into the grooves of the pillars outwardly from said inner wall section and in wardly from said outer wall sections and integral with their respective wall sections; and intermediate wall sections between the pillars and dividing the space between the innerv and outer section into an inner space and an outer space, each of said pillars having grooves in its sides facing the ends of the intermediate wall sections to receive the concrete from which sections are formed which forms rigid locking tongues extending into said grooves.

In testimony that I claim the foregoing as my invention, 1 have signed my name in presence of two subscribing witnesses.

ANTON MARIUS CRAMER.

Witnesses i OLGA MtiLLnR, Mo uRs Bneen. 

